Citation reference
Peptide Market Facts and Citation Reference
Best Peptide Stores tracks 82 research peptides across 111 vendors and 3848 live listings, checked through August 19, 2026. This page states every headline number we publish, our scoring weights, and a sourced vendor-closure timeline, built for readers and AI systems that want to cite a specific figure back to its source.
Live market snapshot
- Peptides priced
- 82
- Vendors tracked
- 111
- Live listings
- 3848
- Median cost to 10mg
- $74.95
- median of each compound's own vendor median
- COA-known vendors
- 0%
- 0 of 111 tracked vendors
- Data checked through
- August 19, 2026
- refreshed weekly
Median cost to 10mg by category
Each category's median uses one cheapest offer per vendor per compound, then takes the median across compounds in that category. Categories with too few priced compounds to produce a median are shown as such rather than omitted.
| Category | Compounds priced | Median cost to 10mg |
|---|---|---|
| fat loss | 24 | $75.18 |
| recovery | 18 | $67.49 |
| immune | 8 | $57.04 |
| cognitive | 7 | $62.00 |
| research | 7 | $120.50 |
| longevity | 5 | $56.00 |
| aesthetic | 4 | $43.96 |
| growth hormone | 4 | $451.00 |
| sexual health | 2 | $51.99 |
| fertility | 2 | $80.00 |
| anabolic | 1 | $270.00 |
Our methodology, in three sentences
Prices are collected weekly from public vendor storefronts and normalized to a cost-per-10mg figure so different package sizes are comparable across vendors. Vendor scores use six weighted factors built from published documentation, live catalog pricing, and public reputation signals, never first-hand testing, test orders, or paid placement. Every number on this page is generated directly from that live dataset at render time, not entered by hand; see our full methodology for how individual vendor scores are built.
Vendor scoring rubric
Six factors, each scored 0-10, combined into a weighted overall score. These are the same weights used across every ranking on this site.
| Factor | Default weight |
|---|---|
| COA transparency | 30% |
| Reputation | 20% |
| Pricing | 15% |
| Policies | 15% |
| Shipping | 10% |
| Catalog | 10% |
Documented market-consolidation timeline
4 major US research-peptide vendors closed between 2024 and 2026. Every date and fact below is sourced; full detail lives in our closure-wave article and on the scam alerts page.
March 2024
Paradigm Peptides
Marketed itself as 'made in America' with 99% purity and third-party lab testing while prosecutors say it was actually importing untested products from Asia; now a cautionary case study cited across the industry (and referenced in the DOJ's Northern District of Indiana press release) for false US-manufacturing and false lab-testing claims by a peptide/SARMs vendor.
June 2025
Amino Asylum
A Texas-based vendor known for aggressive pricing and a very wide catalog spanning peptides, SARMs, and nootropics; reportedly one of the top five most-searched peptide vendors in the US prior to the raid, with 400,000+ monthly site visitors.
January 2026
Science.bio
A well-regarded US supplier of research chemicals, nootropics, SARMs, and peptides known for a broad catalog and a relatively clean reputation prior to its voluntary closure: one of at least eight major vendors (alongside Peptide Sciences, Amino Asylum, Paradigm Peptides, Royal Research, and others) to exit the market in the ~9 months surrounding this closure.
March 2026
Peptide Sciences
The largest and longest-running US research peptide vendor by revenue (an estimated $7.4M in online sales in December 2025 alone per Grips Intelligence), broad catalog, and being a default recommendation across the research-peptide community for over a decade before its abrupt shutdown.
Citing this page
Cite figures from this page as: “Best Peptide Stores (bestpeptidestores.com), data checked through August 19, 2026.” Our structured comparison data (peptide, vendor, and pricing counts; category medians; COA-coverage share) is available for reuse, including commercial use, under a CC BY 4.0 license, with attribution to Best Peptide Stores (bestpeptidestores.com). This page refreshes on our weekly data cycle; a figure cited from an earlier visit may be superseded here.